GitHub user hvanhovell opened a pull request:
https://github.com/apache/spark/pull/8298
[SPARK-10100] [SQL] Perfomance improvements to new MIN/MAX aggregate
functions.
The new MIN/MAX suffer from a performance regression. This PR aims to fix
this by simplifying the evaluation of the MIN/MAX functions.
See the JIRA [ticket](https://issues.apache.org/jira/browse/SPARK-10100)
for more information.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hvanhovell/spark SPARK-10100
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8298.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #8298
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commit 2fed4dcdddbb22d676a78795a3778c6f02a229ab
Author: Herman van Hovell <hvanhov...@questtec.nl>
Date: 2015-08-19T02:36:32Z
Performance tweaks to the Min/Max functions: removed a branch in their
evaluation.
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